Ten boys share 7 cereal bars equally. what fraction of a cereal bar does each boy get?

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Three students, javier, sam, and corrine, participated in a fundraiser where people donated a certain amount of money per lap that the student ran. each student also had some initial donations that were collected before the run. the equations that represent each student's total donation, y, based on the number of laps ran, x, is shown below. match each equation with the correct rate of change for that student.

What is the interquartile range of this day at set?